- AAll 90°
- B90, 45, 45
- C90, 180, 90
- D90, 60, 30
Step-by-Step Solution
Linear pair gives 180 - 90 = 90 for adjacent angles, and the vertically opposite is also 90. So all four are 90°.
Answer: A) All 90°
Two lines intersect. If one angle is 90°, what are the other three angles?
Class 9Linear Pair and Vertically Opposite AnglesGeometry — Lines and Angles
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